How does aluminum protect itself? While chemical laws suggest aluminum should entirely dissolve when exposed to moisture-it has been used extensively for aircraft production since 1911 thanks to a unique property known as “passive oxidation,” which naturally forms an impermeable barrier between itself and external elements, effectively protecting against further degradation caused by weather or other factors. But it can still be affected by corrosion over time due to the ongoing presence of water, chemicals, salt, or other environmental issues. Aluminum is often referred to as a “light metal” due to its very high level of strength compared to its weight.Īluminum doesn’t contain iron therefore, it doesn’t rust. Galvanized Steel (see external treatments)Īluminum is the second most used material, right behind steel.What Metal Options Are Corrosion Resistant? This can occur when any metal reacts with oxygen, moisture, or other gases in its environment and results in a weakening of the metal’s structure due to oxidization. It appears as a reddish-brown coating on metal surfaces.Ĭorrosion, on the other hand, is the result of chemical reactions occurring between metal and their environment.
Rust (a form of corrosion) is exclusive to iron or steel that has been exposed to oxygen and water. Rust and corrosion are two terms used to describe similar processes, yet they have very distinct differences. What’s the Difference Between Rust and Corrosion? This process is known as oxidation, and it produces iron oxide, which has a reddish-brown color – commonly referred to as “rust”. Metal rusts when iron molecules in the metal react with oxygen and water molecules in the air. Carbon Steel with Rust What Makes Metal Rust?
We will also discuss surface coatings, sealing processes, and other preventative measures. This blog post will explore what rust is and which metals are most effective when attempting to protect against corrosion. Metals are highly vulnerable to the damaging effects of rust and corrosion, which can compromise their strength and lead to costly and sometimes dangerous consequences. JanuMETALS THAT DON’T RUST Metals That Don’t Rust or Are Corrosive Resistant
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